Service difficulty report · Web · Boeing 7377H4

Difficulty date
March 8, 2023
Submitted
April 12, 2023
Operation
Air carrier
Aircraft
N956WN
Make and model
Boeing 7377H4
Aircraft serial
36672
Aircraft time
38,869 hours, 23,696 cycles
Part
Web
Condition
Corroded
Location
Zn 100 Fus Lower
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FWD CARGO BAY - CORROSION ON THRESHOLD WEB AT WL 156 - RBL 28.5 BS 480+1; BS 480+3.5; BS 480+4.5. / RBL 29.5 BS 440+5; BS 480+5.<[01] REMOVED CORROSION FROM MULTIPLE LOCATIONS. EVALUATED BLENDS; DEEPEST BLEND IS AT BS440+5 1.5 X .75 D .025. ORIGINAL THICKNESS IS .050. BLEND IS OUT OF LIMITS. IAW SRM 53-30-15 CAL TOOL ID: ATS2566 S/N 00991 EXP 2/29/24;[02] VERIFIED CORRECTIVE ACTION 1 AND MEASUREMENT TABLE;[03] FAULT RESOLVED ON TTG8Q00JDZML;[04] UPDATED TABLE PARAMETERS;[05] CORRECTION FOR CORRECTIVE ACTION 3- FAULT RESOLVED ON TTG8Q00JE2P7;[06] VERIFIED CORRECTIVE ACTON 5

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